Is there a way to highlight text, or even take notes. For what I,ve seen in one of the screenshots of the main page, there seems to be like a notes icon on the top right, but I don't find it in version 1.0.7...

@beyonder this is a feature (actually, the only feature) which we took out from the 1.0 still based on beta feedback (the feature was available for several months during the beta program). We have literally just hidden the button that accesses the feature of annotating, the feature is actually still even built into the app otherwise. We did this because we wanted to still polish this feature and will be bringing it back in the near future in a free update, most likely first in an experimental form where it can be enabled with the explicit understanding that it is an experimental feature.